Multicouple multirevolution printing-machine.



W. SCOTT, DECD.

1.a D. J. scoTT, EXEGUTOBS. MULTIGOUPLE MULTIREVOLUTION PRINTING MACHINE.

APPLICATION FILED 1120.19. 1905.

Patented June 17, 1913.

/ 2 SHEETS-SHEET 1.

W. SGGTT, DECD.

I, @L D, J, SCOTT, ExEcUToRs.

MULTIGOUPLE MULTIREVOLUTION PRINTING MACHINE.

APPLICATION FILED DE0.19.1905.

l,O65,276. Patented June 17, 1913.

2 SHEETS-SHEET 2.

oNi'rED sTaTns PATENT OFFICE.

WALTER SCOTT, 0F PLAINFIELD, NEW JERSEY; ISABELLA SCOTT AlND DAVID JOHN SCOTT EXECUTORS OF SAID WALTER SCOTT, DECEASED.

LIULTICOUPLE MULTIREVOLUTION PRINTING-MACHINE.

Application filed December 19, 1905.

Specification of Letters Patent.

PatentedJJ une 17,1913.

Serial No. 292,437.

Jersey, have invented certain new and use ful Improvements in Multicouple 'Multirevolution Printingdvlachincs, of which the following is a specification.

The present. invention relates generally to printing machines, and has more particularly reference to the arrangement and construction of 'the parts of a multi-couple multi-revolntion machine, and to tripping mechanism connected therewith.

In Patent. No. 1,040,783 of October 8, 1919., there is disclosed a construction embracing a plurality of printing couples adapted to print'on the same side -of the sheet, in combination with means 'for automatically and periodically, at regular intervals, tripping and untripping the impression of the members composing the several couples, together with means. under the control oi the operator or o/an automatic feeder, for maintaining the members in their separated position, the said means being operable from a single actuating device to communicate the motion to the members of all the couples in regular sequence, and whereby when. the said actuating device is released, the machine will resume its former operation and.be tripped and untripped again automatically. The present invention is characterized by a greater simplicity of structure than the one disclosed in my said prior application. Furthermore, in the said prior application, the means for interrupting the operation of the automatic tripping and untripping devices not only act sequentially, but are positioned sequentially. The present structure is distinguished by the fact that the several means for interrupting the operation of the severalautomatic tripping means of two adjacent couples are positioned substantially simultaneously, but vnevertheless act on successive cycles or sequentially.

The form land impression members comprising the printing couple will preferably be of the rotary type, and are so shown in the drawings forming a part of this specilieation. though I do not wishto limit myself for all purposes to a construction involving rotary printing' couples.

The invention further consists` in a new and improved arrangement of sheet carrying devices on the impression and transfer cylinders, whereby the said sheet carrying devices, such as grippers, are operated in harmony with the rotation of the several cylinders and are capable of seizing and releasing the sheets whether or not the` impression is tripped.r

Other objects and features of construction will appear as the specification proceeds.

The invention is embodied in a concrete and preferred construction in the accompanying drawings; it is, however, susceptible of wide modifications without departing from the true spirit of the invention.

In the said drawings: Figure l is a side elevation of so much of a printing machine as is necessary to properly illustrate the invention. Fig. 2 is an end View looking in the direction of the varrow 2 in Fig. 2,

-broken away and with parts omitted.

Similar characters 'of reference indicate coresponding parts in the several views.

1 indicates 'a framework of any suitable construction for properly supporting the parts comprising the machine. -In this .framework are mounted a plurality of printing couples, preferably of a rotary nature, there heilig in the present instance two such eouplesarranged substantially one abo-ve the other. It will be understood, however, that the present invention may be extended to include'three or more printing couples, if desired. Each couple consists of'a form andY impression member, and is adaptedto make a number of revolutions to each impression. ln the present instance, the cylindersrevolve twice to each impression.

2 is the impression cylinder, and 3 the form cylinder of the first printingr couple, while 4 isthe impression cylinder and 5 the form cylinder of the second printing couple. The impression and form cylinders `are preferably of equal diameter as are the transfer.

cylinders G and 7, which are interposed respectively between the first and second impression cylinders, and between the lsecond impression cylinder and a'suitable delivery mechanism" (not shown). This' last-men-t ond revolution of the sai tioned cylinder 7 may be a collecting 'cylinder, if desired.

All of the impression and transfer cylinders, except the first impression cylinder, are provided with grippers, closed by springs' in the usual Way, and opened by means of cams. The first impression cylinder, however, is provided with tumbling grippers, which are caused to tumble back and forth nearly onehalf of a .revolution by suitable means as will be more fully hereinafter described. In the present st le of machine, this construction, in which t e first impression cylinder is provided wit-h tumbling grippers, is advantageous for the reason that the sheet must be positively seized and that 'the lfeed board might interfere with the operati-on of springseated grippers which have to be raised above the surface of the cylinder when the feeding point is reached. In the present instance, the arrangement is such that. the sheet will be received and printed during the first revolution of the impression cylinders, and will be delivered during a ortion of t-he seccylinders.

8 is the feed board adjacent to which are the gages 9 against which sheets are fed, and which are raised in a well known manner when the grippers on the cylinder 2 seize the sheet.

10 indicates inking mechanism of any suit- 'able construction used in connection with revolution, and for opening them on the next revolution of the cylinder. These means, in the present instance, take the form of two rotating cams 19 and 20, which are driven so as to rotate once to a number of revolutions of the impression cylinder' by means of the pinion 21 and the gear 22.

Mounted on the stud 23 in the framework, is an arm 24 having a friction roll which is held in constant engagement with the cam 19 by means of the spring This stud 23 carries a second arm having a pin 2G which projects at the beginning of every other revolution into the plane of the cross-head 17 of ther gripper shaft so as to close the said grippers and seize a sheet.

Pivoted in the frariiework adjacent to the underside of the cylinder 2, is a lever or arm 27 adapted to rock about the center 23 as a pivot and provided at its outer end with the friction roll 29, which is designed to be moved into the plane of the cross-head 17 once to every two revolutions in alternation with the movements of the pin 2G. This lever 27 is operated from the cam 20 by means of the bell crank 30, provided with a friction roll 31 at one end, and having a. connecting rod 32 attached to its other end, whereby motion is transmitted to the' lever 27.` A suitable stop, as 33, may be employed for the purpose of limiting the outward movement of the roll 29, if desired.

The transfer cylinder (i is provided with spring-seated struction, and 1s provided with a crank carrying the roll 35, These grippers are opened and closed twice during one revolution, and remain idle during the remainder of their cycle. Means for effecting this may be varied, but 'preferably I employ two rocking cams 3G and 37 mounted on the arms 38 and 39, which are pivoted at 40 and 41 in the framework. At the outer end of the arms 38 and 39 are friction rolls 42 and 43, which, in the present instance, both engage with the cam 44, so shaped and timed as to move the 1ippers 34 of the iisual conrocking cams 36 and 37 into and out of the plane of the grippers on the cylinder during alternate revolutions.

The second impression cylinder preferably does not deliver its sheet to the transfer cylinder 7, but delivers it to a suitable guide 45 interposed between the said impression and transfer cylinders, so that the sheet may be carried on to be delivered with its printed side out; It is obvious, further, that the transfer cylinder 7 may bea collecting cylinder, and from thisl transfer cylinder the sheet may be delivered in any suitable way as by a drop delivery or otherwise. This is fully disclosed in an application filed by me on the 11th day of August, 1902, Ser. No. 119212, and it is therefore thought unnecessary to enter into the details of this par-t of the machine in the present application. The said second impression cylinder is provided with spring-seated grippers 46 of the usual and ordinary ci-nistruction, having a crank with friction roll 47, ada )ted to come in contact with a suitable cam for opening the Said grippers. Inasmuch as the delivery point of this cylinder is but ashort distance away from'the receiving point or from the axial line between the transfer cylinder 6 and the impression cylinder 4, only one cam is neef Thisnonsens plsne of the gripper mechanism during every revolution .of the cylinder, but opens the grip )ers at a .different point of the rotation of t e cylinder. The precise means for carrying out this may of course be varied, but pneferabl y this cam is .caused to oscillate around the shaft of the cylinder by being provided with the sleeve 49, which, at its outer end, is provided with a gear segment 5t), adapted tobe operated by any suitable means to shift the cam back and forth a certain distance from the receiving poin-t to the delivery point of the cylinder. Pr'eferably this cani is operated from the rotating cam 51 by means of the gear sector 52, pivoted at 53, and provided with an arm 54 having a friction roll 55 which engages with the said cam 5l. This cam 51 is conveniently mounted on the same shaft 56 as the cam 44.

Each of the impression cylinders is mounted in an ecntric bushing 57 upon its shaft., Whereb y, when the said eccentric bushings are turned, the impression cylinders will be moved in and out of printing contact with the plate cylinders. The distance which it is necessary to raise thesel impression cylinders in order to trip the impression, is only about @of an inch, so that the gears on the respect-ive cylinder-s need not be out of mesh with each other. This tripping of the impression cylinders docs not affect their relation to the transfer cylinders to any appreciable extent, and the sheet is Ialways capable of being passed through the machine. whether or not the impression is tripped. The said eccentric bushings 57 are connected by' means of the short arms 58, connecting rods 59 and levers 60 to the roclc shafts 61 and 62, there being provided one rockshaft for each impression cylinder..

Suitable means are provided for rocking these rockshafts at regular intervals, so as to automatically trip and untrip the impression cylinders at predetermined intervals. ln the present instance, the impression cylinders are tripped during their second revolution of each cycle of the machine. Obviously, the'mcans for accomplishing this may be varied widely, but preferably there, is mountednpini the cam shaft 15, two cams 13 and 64, which, as previously explained, are gi von one revolution to a number of revolutionsI (in the present instance, to every two revolutions) of the machine.

65 is a shaft extending transversely of the machine, and on which are loosely mounted a. plurality oflarms (in the present instance. two) one for each impression cylinder, and numbered respectively 66 and (37. Each of the said arms is provided with a roller 68 which, engages in its respective cam groove on one of the cams 63 and 64. Suitable means are provided for communicating the motion of the arms 66 and 67 to the rockshafts 61 and 62. ln the present instance,

these means take the form of slotted connections .688L and 69, connected, by means of the levers 70, to the rockshafts aforesaid, and receiving the motion of the arms aforesaid by means of the pins 71, carried at the lower ends of the said arms and adapted to play in the slots 72 of the connections afore-` said, and to be locked with the said connections wlien the pins 7 ,1 are in the recess 7 3 of the said slots. From this it will be understood that during the normal operation of the machine, the cams G3 and .64, by their rotation, will cause the arms 66 and 67 to oscillate, thereby moving the slotted connections aforesaid, and rocking the rockshafts. This causes the impression cylinders to be moved alternately into and out of contact with the form members. Means are provided, however, for llifting the slotted connections so as to cause the pins 71 to play idly in the slots 72, whereby the form and impression members will be maintained separated as long as the slotted connections are held .in their elevated position. In other words, an interrupt-ing means is provided for the automatic tripping and untripping means.v The means for eifectin this may of course take many forms, but, in the present instance, there is provided a plurality of rockingica'ms 73 and 74. These cams are mounted slidably upon the shaft 75, and are provided with pins 76 extending in under the slotted connections aforesaid, so that when they are movedA into the plane of `thecam or pin 77 and 78, 4which are' conveniently mounted on the cams 63 and 64,

the said cam vor pin 77 and 78 will come in contact with the cam portions 79 of the said rocking cams 78 and 74, thereby rocking them and lifting the slot-ted connections up, so that the pins 71 will play idly in the slots 72. The parts should of course be so arranged that these several cams 73 and 74 can be positioned from a single actuating device, but so constructed, however, as to cause the said cams 7 3 and 74 to actsequentially or upon succeeding cycles, in order that the sheet, properly printed bythe first printing couple, may be allowed to pass through the machine and be printed by the second or other remaining couplesbefore the respective automatic tripping mechanism is rendered incapable of returning the members of the printing couple into printing contact.

In the prior application` Ser. No. 287863, previously referred to. the several interrupting means were timed by reason of the fact thatconnections were made between the interrupting means of the second printing couple and the slotted connection of move the member 80, so as to ca use the latyater, by means of its bifurcatedv end 8l, to move the rocking and sliding cam 73 into the plane of the cam 77. This may be effected by various mechanical contrivances, but, in the present form, there is shown a;

I' rockshaft 82 suitably mounted in the framework, 'provided with a bifurcated lever 83 in engagement with the member 80, and which, when operated, will cause the said member to be moved inward against the pressure of the spring 84. The rockshaft 82 is suitably connectedA to the foot treadle by means of the rod 85 and lever 86.

Interposed between thel two cams 73 and 74 is a spring 87 with which moves a collar 88 cfa slightly larger diameter than the bushing of the cam 73. On the other side of the cam 74 is a spring 89 abutting against the collar 90. 'Mounted on the shaft 91 is a latch 92 which is adapted, under the pressure of the spring 93, to move in behind the sleeve 88 when'the latter is moved over far enough to allow the said latch to move in behind it. Connected to this latch is a release arm 93 which is adapted to be operated by the pin 94 conveniently mounted on the cam 63.

The cam 77, which acts to operate the interrupting means for the first printing couple, is in the form of a continuous rim extending for a suitable distance which varies accordingto the requirements for any particular machineand serves as a means for timing the operation of the interrupting means of the automatic tripping means.

When .the treadle is depressedthe member 80 will be caused to move inward, carrying the cam 73 with it until the inward movement of the said cam is arrested by the continuous rim or timing cam 77, and which movement will cause the bushing of the said cam 73 to abut against the sleeve 88. The additional power exerted by the foot treadle will be stored by the spring 84. The rotation of the cam 63 will eventually bring the gap in the timing cam 77 oppositel to the cam 73', which will thereby, under the pressure stored in the spring 84, move inwardly into the plane of the said timing cam. This additional movement will also cause thecompression of the spring 87 by reason of the fact that the sleeve 88 has been moved a distance inward, sufficient to compress the said spring. and to move the' cam 74 into the plane of the pin 78. Thus both of the rocking cams 73 and 74 are positioned substantially simultaneously and the latch 92 will fall in behind the sleeve 88 and prevent the returnv of the cam 74. The cam 77 will now act upon the cam 73 by means of the end 77a of the said cam 77 coming in contact with the cam surface 79,A

thereby turning the cam 73 and lifting the slotted connection u-p and allowing the pin 7l to' play idly in the slot 72. This point 7 7a of the cam 77 is therefore the equivalent of the pin 78 on the cam 64. This pin 78 is, however, so positioned, that at the moment when both cams 73 and 74 are moved into the plane of their res ective operating mechanism, the said pin 8 will then have passed beyond the point where it would be effective on the cam surface of the cam 74. Hence, during this cycle, only the slotted connection 6 8 will be raised, the latch 92 holding the cam 74 in proper position in the plane of the pin 78. Upon the succeeding cycle, however, the pin 78 :vill tilt the cam 74 and raise the slotted connection 69, thereby maintaining the members of the second printing couple in their separated position. The pin 94, which acts against the release arm 93, is so positioned, -that it will reach the said release arm subsequently to the time when the p in 78 acts on the cam 74. If the foot treadle has not been depressed during the entire interval desired, that is during two cycles 'of the machine, the counterweight 95 will have restored the member 80 to its original position, thereby carrying the cam 73 outward. The latch having now been released, the spring 89 will sequentially move the cam 74 back to its original osition against the pressure of the spring 8 thus allowing the automatic means to regain control of the members of the couple. Should it be desired to maintain the' members of the printing couple separated for a longer perio`d than one cycle of the machine, the foot treadle is maintained in its depressed position either by the operator keeping his foot thereon, or by moving the latch 9G in between the two collars 97 of the foot treadle, or by any other suitable means. Under these circumstances, the release arm will move the latch outward when the 94 comes around in its regular rotation, this will not restore the control of the parts to the automatic tripping and untripping means, for the spring 93 will immediately move the latch back again inasmuch as the cam 73 is maintained in its inward position.

In the claims, the Words first and second printing couple, etc., have been used, but such terms are not to be construed to exclude a combination involving more than two printing couples and in whichA the said tilt' cycle of the machine,

\the interrupting means of the second couple,

'normally inactive but printing couples might not be first and second Also some parts are claimed moving inward, etc. This term is purely relative as used in theseI claims.

What is claimed is:

1. ln a multi-couple, printing machine. the members of which are adapted to print on the same. side of the sheet, the combination with the members ofi two adjacent printing couples, of automatic means for periodically tripping and untripping the members ot' each couple, interrupting means tor the automatic means of each couple normally inactive but adapted to act sequentially during successive cycles of the machine. when properly positioned, and means for positioning both of said interrupting means during the same cycle of the machine.

i2. In a multi-couple, multi-revolution printing machine, the combination with the members of two adjacent printing couples, of automatic means for periodically tripping` and untripping the members of each couple, interrupting means for the automatic means normally inactive but adapted to act sequentially during successive cycles, when properly positioned, means for positionin-Il both of the said interrupting means during the same cycle of the machine, and means for locking the interrupting means of the second couple, when properly positioned, adapted to he released after the automatic means of the first printing couple have regained control of the same.

3. ln a multi-couple, multi-revolution printing machine, the members of which are adapted to print on the same side of the sheet, the combination with the members of two adjacent printingI couples, of automatic means for periodically tripping and untripping the members of each couple, interruptinzgr means for the automatic means normally inactive but adapted to act sequentially during successive cycles, when properly positioned, means` for pi'isitioning both of the said interrupting means during the same and means'for locking when properly positioned, adapted to be released after the automatic means of the iii-st printing couple have regained control of the Same.

et. In a multi-couple, multi-revolntion printing machine. the combination with the members of two adjacent printing couples, of automatic means for periodically tripping and untripping the members of each couple, interrupting means for the automatiil means adapted to act sequentially during successive cycles. \\'hen.prop orly positioned, means .for positioning both of the" said interrupting means dnring'thv same cycle. of the machine, and means` for locking the interrupting means of the multi-revolution second couple, when properly positioned, adapted to be released after t-he automatic means of the. first printing` couple have regained control of the same, and means for restoring the interrupting means of both printing couples to their original position.

5. In a multi-couple, multi-revolution printingr machine. the members of which are adapted to print on the same side of the sheet, the combination with the members of two adjacent printing couples, of automatic means for periodi 'ally tripping and untripping the members of each couple, interrupting means for the automatic means normally inactive but adapted to act sequentially during successive cycles, when properly positioned, means forpositioning both of thesaid interrupting means during the same cycle of the machine, and means for locking the interrupting means of the second couple, when properly positioned, adapted to be released after the automatic printing couple have regained control of the same, and means for restoring the interrupting means of both printing couples to their original position.

G. In a printing machine, the combination with the members of a printing couple, automatic means for periodically tripping and untripping the members of the said couple, means for interrupting the operation o the said automatic means, and means for actuating the said interrupting means comprising a rocking cam slidingly mounted, a rotatable cam for rockingr the rocking' cam having a circumferential rim provided with a gap, means for moving the said cam toward the rotatable cam aforesaid, its movement being arrested by the circumferential rim aforesaid, the said rocking cam moving within the active plane, of the said rotatable cam to be rocked thereby when the gap in the circumferential rim comes opposite to the said rocking cam.

7. In a printing machine, the combination with the members of a printing couple, automatic means for periodically tripping and nntripping the members of the said couple, means for interrupting the operation of the -said automatic. means. and means for actuating the said interrupting means comprising a rocking cam slidingly mounted, a rotatable cam for rocking the rocking cam having,r a circumferential rim of a length equal to substantially five-sixths of a circle, means for moving the said rocking cam toward the rotatable cam aforesaid, its movement. being arrested by the circumferential .rim aforesaid, the said rocking cam moving Within the active plane of the sa id rotatable cam to he rocked thereby when the. gap inthe cirr-.lnnferential rim comes opposite to the. said rockin;r cam. l

.9.. ln a multi-couple multi-revolution printing machine, the members'of which are means-of the rst l adapted to print on the same side of the sheet, the combination with the members of two adjacent printing couples, of automatic means for periodically tripping and untripping the members of each couple, interrupting means for the automatic means of each couple normally inactive, but adapted to act sequentially when properly positioned, means for positioning both ofthe said interrupting means substantially simultaneous, and means for locking the 'interrupting means of the second printing couple, when properly positioned, adapted to be released after the automatic means of the first printing couple have regained vcontrol of the same.

9. In a. multi-couple multi-revolution printing machine, the members of which are adapted to print on the same side of the sheet, the combination with the members of two adjacent printing couples, of automatic means for periodically tripping and untripping the members of each couple, interrupting means for the automatic means of each couple normally inactive, but adapted to act sequentially when properly positioned, means for positioning both of the said interrupting means substantially simultaneous, means for locking the interrupting means of the second printing couple, when properly positioned, adapted to be released after the automatic means of the first printing couple have regained control of the saine, and means for restoring the interrupting means of both. printing couples to their original position.

10. In a printing machine, the combination with two multi-revolution printing couples composed vof form and impression members, two, rockshafts, connections between the rockshafts and one of the members of each printing couple for moving the said members into and out of contact, two rotating cams, connections for operating the rockshafts adapted to he actuated by the rotating cams, two rocking cams adapted to render the crmnections for operating the rockshafts inoperative when properly positioned, means for simultaneously positioning the. said rocking cams, means for rocking the rocking cam of the second couple, means for rocking the rocking cam of the first couple ladapted to prevent the proper positioning of .both rocking cams until the means for rocking the rocking cam of the second couple has passed beyond the point of operation, a latch for locking the rocking cam of the second printing couple after it has been moif'ed into the plane of its rocking means, and means controlled by t'ie first printing couple adapted to release the said latch.

1l, Ina printing machine, the combination with two umili-revolution printing couples composed ofform and impression'mem` bers, two rockshafts, connections between,v

the rockshafts and onelof the members of each printing couple for moving the said members into and out of Contact, two rotating cams, connections .for operating the rocitshafts adapted to be actuated by the rotating cams, two rocking cams adapted to render the connections for operating the roekshafts inoperative when properly positioned, means for simultaneously positioning the said rocking cams, means for rocking the rocking cam of the second couple, means for` rockingthe rocking cam ot the first couple adapted to prevent the proper positioning of; both roeking cams until the means for rocking the rocking cam of the second couple has passed beyond the point of operation, a latch v4tor locking the rocking cam of the second printing couple after it has been moved into the plane of its rocking means, means controlled by the first printing couple adapted to release the said latch, and means for restoring both rocking cams to their original position.

12. In a printing machine, the combination with two multi-revolution printingr couples composed of form and impression members, two rockshafts, connections between the rockshafts and one of the members of each printing couple for moving the said members into and out of contact, two rotating cams, connections for operating the rockshafts adapted to be actuated by the rotating cams, an auxiliary cam shaft, two rocking cams slidingly mounted thereon adapted to render the connections for operating the roekshafts inoperative, when properly positioned, a spring interposed between the said two rocking cams, a spring acting against the rocking cam of the second printing couple in opposition to the spring interposed between the two rocking cams, means for rocking the rocking cam' of the second' printing couple, when properly positioned, means adapted to arrest the inward sliding movement of the rocking cam of the first printing couplefor a predetermined period and for subsequently'acting thereon to rock the same when movedwithin its plane, an actuatingmember, having a spring for storing power, which, when operated, acts to move the rocking cam of the first printing couple inward until its movement is arrested, the continued inward movement of the rocking -cam of the first printing couple, effected by the power stored in. the spring aforesaid, moving the said rocking cam within the plane of the means aforesaid for acting thereon, and simultaneously therewith acts through the spring interposed between the two rocking cams to bring the rocking cam of the second printing couple within the plane of the mea'ns for operating the same, a latch for prevent-ing the return of the second rocking cam, and means for releasing the said latch first. printing couple have regained control after the automatic means aforesaid ot' the thereof.

13. In a printing machine, the combination with two multi-revoluti0n printing couples composed of form and impression members, two rockshatts, connections between the rockshafts and one of the members ot' each printing couple for moving the said members into and out. of contact, two rotating cams, connections for operating the rockshafts adapted to be actuated by the rotatingr cams, an auxiliary cam shaft, two rocking cams sliding),7 mounted thereon adapted to render the connections for operating the rockshafts inoperative, when properly positioned, a spring inter posed between the said two rocking cams, a spring acting against the rocking cam of the second printing couple inopposition to the spring interposed between the two rocking cams, means for rocking the rocking cam of the second printing couple, when properly positioned, means adapted to arrest the inward sliding movement of the rocking cam of the Ifirst printing couple for a predetermined period and for subsequently acting thereon to rock the same when moved within its plane, an actuating member, having a spring for storing power, which, when operated, acts to move the rocking cam of the first printing couple inward until its movementis arrested, the continued inward movement of t-he rocking cam of the first printingcouple, effected by the power stored in the spring aforesaid, moving the said rocking Acam* within the plane of the means aforesaid for acting thereon, and simultaneously therewith acts through the spring interposed between the two rocking cams to bring the rocking cam of the. lsecond printing couple within the plane of the means for operating the same, a latch for preventing,r the return of thc seeond rocking cam, means for releasing the said latch after the automatic means aforesaid of the rst printing couple have regained control thereof.I and means for restoring the rocking:` cani of' the first printing,r couple to its original position.

14. In a multi-couple multi-revolution printing,r machine, the members ot which are adapted to print on the same side ot the sheet, the combination with the members ot two adjacent printingr couples, ot automatic means for periodically tripping and untriping the members of each couple` interrupting means for the automatic means ot each couple normally inactive. but adapted to act l sequentially when properly positioned` a g single actuating,r device for positioning both l ot' the Said inlerruptiimr means substantially simultaneous', and means for locking; the inl terrupting means of the second printingr couple, when properly positioned, adapted l to be released after lthe automatic means of the first printing couple ha \'e regained control of the same.

15. In a multi-couple multi-revolution printingl machine, the members of which are adapted to print on the same side of the sheet, the combination with the members of two adjacent printing' couples, of automatic means for periodically tripping and untrippingr the members` of each couple. interrupting means for the automatic means of each. couple normally inactive, hilt adapted to act sequentially when properly positioned, a single actuatingr devlce for positioniuglr both of the said interrupting means substantially 30 simultaneous, means for locking the interrupting means of the second printing couple, when properly positioned, adapted to be released after the automatic means of the first printing couple have regained control of the same, and means for restoring the interrupt ing means of both printing couples to their original position.

i6. In a printing machine, the combination with Atwo multi-revolution printing couples composed ot form and impression niembers, two rockshafts, connections between the. rockshafts and one of the members of each printing couple for moving the said members into and out of contact, two rotating' cams, connections for operating the rocltshafts adapted to be actuated by the rotatingf cams, two rocking cams adapted to render the connections for operating the roclrshatts inoperative, when properly positioned. a single actuating device for simultaneously positioningr the said roc-kingr cams, means tor rocking thc rocking cam-of the secoml couple, means for rocking the rockingcam ot' the tirst couple adapted to pre- 105 vent the proper positioning of both rocking camsl until the means for rocking the rocking,y cam of the second couple has passed be: youd the point ot operation, a latch t'or lockineT the rocking' cani of the second printing 110 couple after it has been moved into thc plane oti its rocking means, and means controlled by the irsl printing couple adapted to release the said latch.

1T. ln a printing machine, the combina 115 tion with two niultirevolution printing couplesI composed ot Yt'orm and impression members, two rockshafts, connections between the rockshatts and one of`the members' of each printingY couple for moving the, 12u

Said membrana into and out of, contact, two rotating;r cams. eonncctionsfm' operating the rockshafts adapted to be actuated by the rotationY cams. two rocking cams adapted to render the fonnection` for operating;r the 125 rockshals inoperative v fit1. properly positioocd. a single actuating device tor' siinulA mucous-ly positioning tbc said rwlting cams, mcam Vtor rofiting the rockingA cam of the second couple, means for rocking the rDCllease the said latch, and means for restoring 10 both rocking cams to their' original position. Signed at New York city this 13 day of December 1905.

ing cam of the first couple adapted to preventy the proper positioning of both rocking cams until the means for rocking the rocking cam of the second couple has passed beyond the point of operationl` e hitch for locking the rocking cam of the second printing couple after it has been moved into the i plane of its rocking means, means controlled l by the first printing Couple adapted to re- WALTER SCOTT.

Witnesses:

RAYMOND G. SPAULDING, H. M. SEAMANS, 

